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- Some women experience morning sickness during the first trimester of pregnancy. 有些妇女在怀孕的头三个月里,早上有恶心感。
- The first trimester of pregnancy. 妊娠的头三个月
- This is a 33-year-old, primigraida, with a normal first trimester screening. 患者，33岁，初产妇，早期妊娠时检查未看到异常。
- First trimester ultrasound: a practical approach.In: McGahan J, Porto M, eds.Diagnostic obstetrical ultrasound. 早期妊娠通过左卵巢的经阴道超声冠状切面，显示黄体囊肿4.;5cm(光标示)。
- No data have been published on first trimester teratogenic risk with ondansetron. 没有研究表明在妊娠早期使用恩丹西酮有致畸风险。
- On the contrary NO donor may help to terminate of pregnancy in the first trimester. 反之，如使用NO供体则有助于终止妊娠。
- Any fever-related illness during the first trimester of pregnancy may carry a two-fold higher risk of offspring with heart defects," the statement said. 这项申明说，“何发烧的疾病在怀孕的前三个月都有可能使婴儿具有双倍患心脏疾病的高风险”。
- OBJECTIVE To study the imprinting status of H19 gene in normal villi tissue during the first trimester,and its relation to the invasion of trophoblast. 目的检测早孕绒毛组织中印迹基因H19印迹的状态,探讨其印迹状态与滋养细胞浸润能力之间的联系。
- Objective To prepare highly purified human trophoblast cells from human placentae at the first trimester of normal pregnancy. 目的建立人早孕绒毛滋养层细胞有效的分离、培养方法。
- Any feer-related illness during the first trimester of pregnancy may carry a two-fold higher risk of offspring with heart defects," the statement said. 这项申明说，“何发烧的疾病在怀孕的前三个月都有可能使婴儿具有双倍患心脏疾病的高风险”。
- Methods Immunohistochemicl method was used to detect the expression of LN and LN-R in human villi during the first trimester and choriocarcinoma. 方法采用免疫组织化学的方法，观察正常早期妊娠绒毛和绒癌组织中LN、LN-R的表达。
- Risk factors for first trimester miscarriage ?results from a UK-population-based case-control study. 2007 N Maconochie, P Doyle, S Prior, R Simmons. 怀孕前三个月流产的风险因素来自于英国人群病例对照研究。
- Virus infection：In the first trimester of pregnancy (especially, the first two months), rubella virus infection can produce a harelip infant. 病毒感染：在妊娠早期(2个月内)，如遇风疹病毒感染，可能成为婴儿唇腭裂的原因。
- Methods By immunohistochemical method the expression of HB-EGF was observed in 18 cases of human first trimester villi and decidua. 评估HB-EGF在人类胚泡着床和早期胎盘组织发育中的作用。
- Conclusions: （1）The proportion of CD56+ NK cells was higher in the first trimester which can indicate the miscarriage of URSA patients. 结论：（1）妊娠早期外周血CD56+ NK细胞比例增高预示URSA的发病机率增加；
- Radiation：If the pregnant woman is exposed under radiation in the first trimester of pregnancy, the embryo has a chance to suffer harelip. 放射线：妊娠早期如果接触放射线，则有可能导致胎儿唇裂腭裂。
- Methods By immunohistochemical method the expression of HB EGF was observed in 18 cases of human first trimester villi and decidua. 方法采用免疫组化法检测18例早孕绒毛及蜕膜组织中的HB-EGF的表达及定位。
- The invasiveness of trophoblast derived from first trimester pregnancy can be inhibited by decidual cell conditioned media (DCM),while the mechanism is not very clear. 先前研究表明，蜕膜细胞条件培养液(decidual cell conditioned media，DCM)能够阻止早孕滋养细胞的侵入，然而其具体机制尚未阐明。
- Her communication skills have also taken a plunge: "Especially in my first trimester, I had a very difficult time speaking coherently and writing clearly," she says. 她的沟通能力也受到了影响：“尤其是头三个月，我很难有条理地说清楚一件事或者写东西。”
- Oerall, 42.2% of first treatments occurred in the second trimester and 46.9% occurred in the third trimester. Only 10.9% of treatments occurred in the first trimester. 整体说来，第一次治疗开始在妊娠期第二个三个月的占42.;2%25，在妊娠期末三个月的占46
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